iOS 12.0 (build 16A366) is an official Apple over-the-air update for the iPhone 6, released on 2018-09-12T19:11:06Z. The update package is 1.71 GB. This is a delta (partial) update that requires 10.3.3 already installed. This update is no longer signed by Apple, meaning it can no longer be applied on-device through Settings.

Payload file: fe434c5fc5fd9e9734f1e2e0c3e98f34311b1a98.zip.